Fourth to



(N0 Model.)

M. S'. GABELL. l MEANS EOE CLEANING ELUES 0E STEAM BoILEEs.

No. 310,028. I Patented Dec. 30, 1884,

W I TJV ESSES @KQ/@M N Nrrn rares MILTON S. CABELL, OF QUINGY. ILLINOIS,ASSIGNOR OF ONE-FOURTH TO SAMUEL G. GABELL, OF VASHINGTON, D. C.

lVlEANS'FO CLEANING FLLlES OF STEAlVl-BOlLRS.

SPECIFICATION forming part of Letters Patent No. 310,028, dated December30, 1884.

Application filed July 5, 188.4. A(No model.)

boilers in which a jet orjets of steam are pror jected into and throughthe lues from a nozzle or tip inserted in the ends of the iiues.

In devices of this kind as ordinarily constructed the steam -injectingtip or nozzle Vis inserted into the endof a flue, and a collar orshoulder back of the nozzle or tip operates to completely close the endof the flue. This closure of the end of the iiue causes the steamprojected into the iue from the nozzle to form a vacuum or partialvacuum between the shoulder or collar and the point where the projectedblast of steam strikes the sides of the line, and the flue at that pointis consequently not properly cleaned.

In my invention I construct the collar or shoulder which is back of thenozzle or tip of conical or tapering form and adapt it to partiallyenter the end of the tlue, and I provide it with a series of exteriorcorrugations, or I perforate it, so as to form channels for the passageof air into the due around the nozzle.

By this construction the formation of avacuum is prevented, and the airdrawn in in the form of jets is caused to clean that part of the fluewhich ordinarily remains untouched. I also preferably provide thenozzlecr tip with a series of discharge-passages arranged spirally, sothat the steam as it emerges from the tip is given a spiral whirlingmotion, which increases greatly the effectiveness of the device;

,45 and Ialso, by preference, arrange spirally the air-passages in thecollar or shoulder, so that the same whirling motion will be given theinilowing air-currents.

In the accompanying drawings, Figure l represents a side view of oneform of my fluecleaner; Fi g. 2, an end view of the same.; Fig.

3, a longitudinal sectional view taken on the line 90 x, Fig. 2. Fig. 4is a view of a moditication of the invention; Figs. 5 and 6,viewsshowing different modes of connecting the liexible steam supply pipe.

Similar letters of 'reference in the several gures indicate like parts.

The letter A indicates the j flexible pipe through which the steamemployed is conducted. As shown in Figs. l and 3, this pipe hasconnections to a T shaped coupling, B, with the tubular stem O. Upon thestem G is arranged a tip or nozzle, D, having in its end a series ofspirally-arranged passages, d, which lead into the tubular stem C, asshown in Fig. 3, and having also an outwardly-projecting tapering collaror enlargement, D', provided with the lseries of spirally-arrangedexterior corrugations, cZ, as shown in Fig. l, or with a series ofperi'orations, d2,.as shown in Fig. et.

The coupling has connected to it a suitable handle, E, by means ofwhichY the device can be conveniently manipulated.

In operation the tube Ais connected to the boiler to be cleaned, or anyother source of steam-supply, and the tip or nozzle is inserted into theilues one after another, the flange or collar D being of such size as toprevent the 8o nozzle or tip being entirely pushed into the line, asshown in Fig. 1. The steamjas it is delivered from the extremity of thetip or nozzle, is blown along in a spiral whirling course through thedue, the air entering the air channels or apertures rushing along withit, and effectually cleaning the whole flue from end to end. The air-inlets are preferably properly arranged sol as to deliver the air atthe same angle at which the steam is projected 9o from the tip.

By curving or tapering the perforated dange the device is madeself-centering when the extremity of the nozzle is thrust into the endof the flue.

Instead of employing the T -shaped coupling B, the ilexible steam-supplypipe may be connected directly to the hollow stem C, as shown in Figa',and a handle connected directlyto the said hollow stem; or, in lieu ofroo the last -named construction, that shown i Fig. 6 may be employed.

I claim as niy invention- 1. In a flue cleaner, a tip or nozzle having asteanrdischarge orifice or orifices, and provided back of the point ofdischarge with a projection constructed to prevent the insertion of thetip too far Within the flue, but yet admit the passage of air into theue around the tip, substantially asV described.

2. In a flue cleaner, the tip or nozzle provided with a steam discharge,and having a perforated or corrugated collar or Iiange back of the pointof steanrdischarge, substantially as described.

3. A flue cleaner having a passage or passages for discharging steam anda tapering perforated or corrugated flange or collar, substantially asdescribed.

4. In a flue-cleaner, the combination of the tip or nozzle having thespirally-arranged steam-discharge orifices and the flange or collarhaving the spirally-arranged air-inlet channels, substantially asdescribed.

5. The combination of a tubular stern or handle and the flexibleIsteam-supply pipe connected thereto, and the tip or nozzle having thespirally-arranged steam-discharge channels, and the tapering perforatedor corrugated flange or collar, substantially as described.

MILTON S. CABELL.

Vitnesses:

J. H. BAsTEE'r, J. O. BROADY.

